CN102856347A - Display apparatus for controlling optical transmissivity - Google Patents

Abstract

A display apparatus includes a transparent display device, a first polarizer on a first surface of the transparent display device, a first retarder between the first polarizer and the first surface of the transparent display device, a second polarizer on a second surface of the transparent display device opposite the first surface, and a conversion retarder between the second polarizer and the second surface of the transparent display device, the conversion retarder being configured to delay a wavelength of the external light within a range from a first phase to a second phase and to transmit the wavelength-delayed light therethrough when power is supplied to the conversion retarder.

Description

The display unit that is used for the control light transmission

Technical field

One or more aspects of illustrative embodiments relate to display unit, relate in particular to the display unit that has according to the light transmission of pattern control.

Background technology

Organic light-emitting display device compare with other display unit have larger visual angle, better contrast-response characteristic and response time faster, and consume still less electric power.Therefore, organic light-emitting display device has been used for various applications.For example, organic light-emitting display device is used in the personal movable apparatus and TV such as MP3 player and mobile phone.Organic light-emitting display device has the self-luminous characteristic, because it needs extra light source unlike liquid crystal display (LCD) device, so can reduce its weight and thickness.In addition, by comprising therein transparent film transistor (TFT) or transparent organic light emitting diode (OLED) and by forming the transmission area (or transmissive window) that separates with pixel region, organic light-emitting display device can being made transparent display.

Summary of the invention

One or more aspects of illustrative embodiments provide a kind of display unit, and it has the optical device on the transparent display device, to control light transmission according to pattern and with smaller power.

An aspect according to illustrative embodiments, a kind of display unit for the control light transmission is provided, described display unit comprises: transparent display device, described transparent display device comprises the pixel of the second area that is divided into first area and contiguous described first area, described first area is used for luminous, and described second area is used for passing it and propagates extraneous light; The first polarizer is positioned on the first surface of described transparent display device, the light after described the first polarizer is configured to make the extraneous light linear polarization and passes it propagate linear polarization; The first delayer, between the described first surface of described the first polarizer and described transparent display device, the light after described the first delayer is configured to postpone the phase place of extraneous light and passes its propagation phase delay; The second polarizer, be positioned on the second surface of described transparent display device, described first surface and the described second surface of described transparent display device are respect to one another, the light after described the second polarizer is configured to make the extraneous light linear polarization and passes it propagate linear polarization; And transfer lag device, between the described second surface of described the second polarizer and described transparent display device, described transfer lag device is configured to when providing power to described transfer lag device, the light after postponing the phase place of extraneous light and pass its propagation phase delay in by the scope of the first phase place to the second phase place.

Described the first polarizer can have identical polarization axle with described the second polarizer.

Described the first delayer can be configured to described the first phase place of the phase delay of extraneous light.

Described transfer lag device can be configured to according to for its power that provides with described the first phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is passed its transmission for stopping extraneous light.

Described transfer lag device can be configured to according to for its power that provides with described the second phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is propagated extraneous light for passing it.

Described the first polarizer and described the second polarizer can have mutually perpendicular polarization axle.

Described the first delayer can be configured to described the first phase place of the phase delay of extraneous light.

Described transfer lag device can be configured to according to for its power that provides with described the first phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is propagated extraneous light for passing it.

Described transfer lag device can be configured to according to for its power that provides with described the second phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is passed its transmission for stopping extraneous light.

Described transfer lag device can comprise the second delayer and liquid crystal layer, described the second delayer is between described transparent display device and described liquid crystal layer, described liquid crystal layer is between described the second delayer and described the second polarizer, and described liquid crystal layer is configured to postpone in predetermined scope according to the voltage that applies to it phase place of extraneous light.

Described the first polarizer can have identical polarization axle with described the second polarizer, and described the first delayer is configured to described the first phase place of the phase delay of extraneous light.

Described the second delayer can be configured to described the second phase place of the phase delay of extraneous light; Described liquid crystal layer can be configured to when voltage is applied to described liquid crystal layer, postpones the phase place of extraneous light in by the scope of third phase position to the four phase places; And the summation of described third phase position and described the 4th phase place can equal described the 4th phase place, the summation of described the 4th phase place and described the second phase place can equal described the first phase place, and described the first phase place can have identical absolute value with described the second phase place but have different directions.

Described the second delayer can be configured to described the first phase place of the phase delay of extraneous light; Described liquid crystal layer can be configured to when voltage is applied to described liquid crystal layer, postpones the phase place of extraneous light in by the scope of the 5th phase place to the six phase places; And the summation of described the 5th phase place and described the first phase place can equal described the second phase place, the summation of described the 6th phase place and described the first phase place can equal described the first phase place, and described the first phase place can have identical absolute value with described the second phase place but have different directions.

Described the first polarizer and described the second polarizer can have mutually perpendicular polarization axle, and described the first delayer is configured to described the first phase place of the phase delay of extraneous light.

Described pixel can comprise: pixel circuit unit is arranged in described first area and comprises at least one thin-film transistor (TFT); The first insulating barrier covers described pixel circuit unit at least; The first electrode is positioned on described the first insulating barrier, and to be electrically connected to described pixel circuit unit, described the first electrode is arranged in described first area; The second electrode is arranged in the described first area of described pixel and at least towards described the first electrode; And organic layer, between described the first electrode and described the second electrode, described organic layer comprises luminescent layer.

The second electrode can be included in the first opening in its position corresponding with second area.

Display unit can also be included in a plurality of second insulating barriers of the position corresponding with second area.Each of a plurality of the second insulating barriers can be included in the second opening in the position corresponding with at least a portion second area.

The first insulating barrier and a plurality of the second insulating barrier can be formed by transparent material.

The first electrode can be the optical transmission electrode, and can be overlapping with pixel circuit unit, to cover pixel circuit unit.

The first electrode can be the optical reflection electrode, and not overlapping with pixel circuit unit, thereby does not cover pixel circuit unit.

Described transfer lag device can be the convertible delayer with at least two out of phase states.

Described the first delayer and described transfer lag device can comprise different materials.

Described transfer lag device can comprise liquid crystal.

Description of drawings

By the reference accompanying drawing illustrative embodiments is described in detail, for those of ordinary skill in the art, above-mentioned or further feature and advantage will be apparent, wherein:

Fig. 1 shows the schematic cross sectional view according to the display unit of an execution mode;

Fig. 2 shows the pixel included according to the display unit of Fig. 1 of an execution mode;

Fig. 3 shows the pixel included according to the display unit of Fig. 1 of another execution mode;

Fig. 4 illustrates the cutaway view of sub-pixel among Fig. 2 or Fig. 3;

Fig. 5 illustrates the schematic cross sectional views according to the display unit of another execution mode;

Fig. 6 illustrates according to the pixel in the display unit of Fig. 5 of an execution mode;

Fig. 7 illustrates according to the pixel in the display unit of Fig. 5 of another execution mode;

Fig. 8 illustrates the cutaway view of the sub-pixel of Fig. 6 or Fig. 7;

Fig. 9-12 illustrates the driving according to the display unit of execution mode; And

Figure 13 illustrates the schematic cross sectional views according to the display unit of another execution mode.

Embodiment

That on June 27th, 2011 submitted in Korea S Department of Intellectual Property, as to be entitled as " display unit that is used for the control light transmission " 10-2011-0062489 korean patent application by reference integral body is incorporated this paper into.

Describe more fully with reference to the accompanying drawings hereinafter illustrative embodiments, still, they can multi-form enforcements and should not be considered as restriction to execution mode described herein.On the contrary, provide these execution modes, so that the disclosure is abundant and complete, and explain fully scope of the present invention to those skilled in the art.

In the accompanying drawings, in order to clearly demonstrate, can amplify the size in layer and zone.It is also understood that when the layer (or parts) be known as be positioned at another the layer or substrate " on " time, this layer can directly be positioned at another layer or substrate on, perhaps also can have the intermediate layer.In addition, it is also understood that when layer be known as be positioned at two layers " between " time, it can be only layer between two-layer, perhaps also can have one or more intermediate layers.Identical reference marker represents identical parts all the time.

And, can be used for describing various parts such as the term of " first ", " second " etc., these parts should not be limited in the above-mentioned term.Above-mentioned term only is used for distinguishing parts and another parts.

Term as used in this specification only is used for describing illustrative embodiments, rather than attempts to limit illustrative embodiments.The expression of using in the odd number mode comprises plural expression, unless clear and definite different implications are arranged in context.In this manual, be to be understood that, be intended to expression such as " comprising " or terms such as " having " and have the disclosed feature of specification, quantity, step, action, parts, part or its combination, rather than attempt the possibility getting rid of the existence or increase one or more other characteristics, quantity, step, action, parts, part or its combination.

Fig. 1 is the schematic sectional view according to the display unit 100 of execution mode.With reference to Fig. 1, display unit 100 can be included in extraneous light by the first polarizer 21, the first delayer (retarder) 41, transfer lag device (conversion retarder) the 61 and second polarizer 22 on the transparent display device 10 of its propagation.

Transparent display device 10 can be the light-emitting display apparatus as the bottom emissive type display device, and can comprise the first substrate 1, be arranged on the first substrate 1 display unit and the sealing display unit the second substrate 2.Display unit is divided into a plurality of pixels, and each pixel comprises pixel region 31 and transmission area 32, pixel region 31 is for luminous and show the zone of image to the first substrate 1, and transmission area 32 is to be arranged near the pixel region 31 and by it propagates the zone of extraneous light.

The first delayer 41 and the first polarizer 21 can for example sequentially be arranged on the outside (being first surface 10a) of the first substrate 1 of transparent display device 10, i.e. the side sent from transparent display device 10 of light.The circularly polarized light in conjunction with allowing to propagate in a direction of the first polarizer 21 and the first delayer 41 passes through.In other words, the combination of the first polarizer 21 and the first delayer 41 only allows in left circularly polarized light and the right-circularly polarized light to pass through, thereby can make extraneous light from the reflection minimized of the front surface of display unit 100, thereby allow the user to see more clearly image.Here, the first polarizer 21 is to make incident light at the linear polarization of a direction Linear polarization, and the first delayer 41 is the convertible delayers that make incident light phase delay+1/4 wavelength (+λ/4).

Transfer lag device 61 and the second polarizer 22 can for example sequentially be arranged on the outside (being second surface 10b) of the second substrate 2 of transparent display device 10, and namely light is not by its side of sending from transparent display device 10.That is to say, display device 10 can be between the first delayer 41 and transfer lag device 61.For example, the first delayer 41, the first substrate 1, the second substrate 2 and transfer lag device 61 can sequentially overlay on the first polarizer 21.Here, the second polarizer 22 is to make incident light at the linear polarization of a direction Linear polarization.

According to an execution mode in the illustrative embodiments, in display unit 100, the first polarizer 21 can have identical polarization axle with the second polarizer 22.According to another execution mode in the illustrative embodiments, the first polarizer 21 can have different polarization axles with the second polarizer 22.

Transfer lag device 61 is the convertible delayers that make incident light phase delay in-1/4 wavelength (λ/4) arrives the scope of+1/4 wavelength (+λ/4), and can change the value of phase delay.Transfer lag device 61 can according to the phase place of mode delay incident light, for example, can produce patterns of change according to the voltage that it is applied or power.For example, transfer lag device 61 can be by Formation of liquid crystals, that is, can be according to the electric field alignment liquid crystal that applies, perhaps transfer lag device 61 can be formed by electrochromic material, that is, and can be according to the state that changes electrochromic material to the power of its supply.For example, when transfer lag device 61 during by Formation of liquid crystals because liquid crystal produces reaction to voltage difference, so even can in the entire area of liquid crystal, obtain phase difference, and can utilize less performance number to operate liquid crystal.In addition, the transfer lag device 61 by Formation of liquid crystals can be cheap.

Can be convenient to adjust with less performance number the transmissivity of extraneous light according to the transfer lag device 61 of the display unit 100 of illustrative embodiments.That is to say, can control the phase-delay value of transfer lag device 61, adjust transmissivity to utilize relatively low power consumption, as what below will describe in further detail.

Usually, transparent display (or transparent display device) has fixing transmissivity with respect to extraneous light, and therefore, the user can't adjust to aspiration level with its transmissivity.In the time can regulating light transmission by peripheral control unit, (for example regulated by the shutter that is installed in the transparent display device outside), use shutter can cause the overall transmission of the transparent display device of larger power consumption and reduction.For example, because shutter comprises various device, for example electrode, at least one optical thin film and at least one substrate are so can reduce the transmissivity of transparent display device, shutter even only can have approximately 5% transmissivity in the pattern that is used for transmission light for example relatively largely.In other words, when the outside that shutter is installed in transparent display device during with the transmissivity of control transparent display device, the overall transmission of display device can reduce significantly because of shutter, so has stoped the normal operation of transparent display device.

But according to illustrative embodiments, transfer lag device 61 namely, with the first delayer 41 and the first/the second polarizer 21/22, can come the control phase length of delay according to pattern with other optical elements.Therefore, can come with less performance number the transmissivity of control display equipment 10, and needn't use the light transmission controller of large power consumption, for example needn't use shutter.Also it is noted that the optical element (for example polarizer and delayer) of display unit 100, the overall transmission of display device 10 is reduced significantly, for example be different from shutter, therefore make display unit 100 carry out normal operation with transparent mode.

According to execution mode, if display unit 100 is moved with transparent mode, then the user can watch by display unit 100.That is to say, show that at image the user of side can be by using in the first extraneous light 51 of propagating to the direction in the first substrate 1 outside from the second substrate 2 outsides, the target of watching the second substrate 2 outsides.And, the user of the opposite side of side also can by using at the second extraneous light 52 of propagating to the direction in the second substrate 2 outsides from the first substrate 1 outside, watch the target that shows in the first substrate 1 outside showing with image.The first extraneous light 51 is propagated in the direction that shows image, and the second extraneous light 52 is being propagated with the direction of the opposite direction of the first extraneous light 51.

If display unit 100 is to be used for stopping black pattern (or stopping pattern) operation of light, the user can't watch by transmission display device 100 so.That is to say, show that at image the user of side can't see the target of the second substrate 2 outsides.And, showing that with image the user of the side that side is opposite can't see the target of the first substrate 1 outside.The below is described in detail in reference to Fig. 9-12 and drives display unit 100 in the various patterns, that is, and and in transparent mode and in the black pattern.

Fig. 2 shows according to included pixel in the transparent display device 10 of an execution mode Fig. 1, and Fig. 3 shows according to included pixel in the transparent display device 10 of another execution mode Fig. 1.With reference to Fig. 2 and 3, pixel can comprise a plurality of sub-pixels, for example red sub-pixel Pr, green sub-pixels Pg and blue subpixels Pb.

Among redness, green and blue subpixels Pr, Pg and the Pb each includes pixel region 31 and transmission area 32.In pixel region 31, pixel circuit unit 311 and luminescence unit 312 can be arranged to adjacent one another are but not overlap each other, so that when the bottom-emission that produces in luminescence unit 312 towards the first substrate 1, optical path can not stopped by pixel circuit unit 311.The transmission area 32 of propagating extraneous light can be arranged on pixel region 31 near.Transmission area 32 can be set to correspond respectively to redness, green and blue subpixels Pr, Pg and Pb, thereby is spaced from each other as shown in Figure 2 or is connected to each other as shown in Figure 3.In other words, in the whole zone of display unit, pixel can be included in a plurality of pixel regions 31 of spaced-apart setting between the public transmission area 32.

In the execution mode of Fig. 3, the area of propagating the transmission area 32 of extraneous light can greater than the area in the execution mode of Fig. 2, therefore improve the overall transmission of display unit.Although Fig. 3 shows all transmission areas 32 corresponding with red sub-pixel Pr, green sub-pixels Pg and blue subpixels Pb and is connected to each other, but illustrative embodiments is not limited to this, and for example the transmission area 32 corresponding with two adjacent subpixels among red sub-pixel Pr, green sub-pixels Pg and the blue subpixels Pb can be connected to each other.

Fig. 4 is the cutaway view of Fig. 2 or redness, green and one of blue subpixels Pr, Pg and Pb shown in Figure 3.As shown in Figure 4, in the pixel circuit unit 311 of pixel region 31, thin-film transistor (TFT) can be set, but illustrative embodiments is not limited to this, for example the image element circuit that comprises TFT can be set.Pixel circuit unit 311 can also comprise a plurality of TFT and holding capacitor.And pixel circuit unit 311 can also comprise scan line, data wire and the Vdd line that is connected to a plurality of TFT and holding capacitor.In the luminescence unit 312 of pixel region 31, can be provided as the organic light emitting apparatus EL of luminaire.Organic light emitting apparatus EL can be electrically connected to the TFT of pixel circuit unit 311.

Particularly, resilient coating 211 can be formed on the first substrate 1, comprises that the image element circuit of TFT can be formed on the resilient coating 211.Semiconductor active layer 212 can be formed on the resilient coating 211.

Resilient coating 211 protection substrates 1 are not subjected to the impact of impurity, and make the flattening surface of substrate 1.Resilient coating 211 can be formed by any material in the various materials that can realize above-mentioned functions.For example, resilient coating 211 can be formed by inorganic material and/or organic material, inorganic material for example is Si oxide, silicon nitride, silicon nitrogen oxide, aluminum oxide, aln precipitation, titanium oxide or titanium nitride, and organic material for example is polyimides, polyester or acrylic.Therefore resilient coating 211 optional parts can not form resilient coating 211.

Semiconductor active layer 212 can be formed by polysilicon, but is not limited to this, for example can be formed by conductor oxidate.For example, semiconductor active layer 212 can be G-I-Z-O layer [(In ₂O ₃) _a(Ga ₂O ₃) _b(ZnO) _cLayer], wherein a, b and c are integers and satisfy respectively a 〉=0, b 〉=0 and c＞0.When semiconductor active layer 212 is formed by conductor oxidate, can improve the transmissivity of the pixel circuit unit 311 of pixel region 31, therefore improved the overall transmission of display unit.

Gate insulation layer 213 can be formed on the resilient coating 211, and to cover semiconductor active layer 212, grid 214 can be formed on the gate insulation layer 213.Interlayer insulating film 215 can be formed on the gate insulation layer 213, with cover gate 214.Source electrode 216 and drain electrode 217 can be formed on the interlayer insulating film 215, to pass through respectively contact holes contact semiconductor active layer 212.The structure of TFT is not limited to above description, and the TFT of any type can use.

Can form passivation layer 218, to cover TFT.Passivation layer 218 can be single insulating barrier or a plurality of insulating barrier, and the upper surface of passivation layer 218 is planarizations.Passivation layer 218 can be formed by inorganic material and/or organic material.Passivation layer 218 can form and cover pixel region 31 and transmission area 32, for example, as shown in Figure 4, but is not limited to this.Although do not illustrate, can in the corresponding part of passivation layer 218 and transmission area 32, form the opening (not shown), pass transmission area 32 and propagate the efficient of extraneous lights and improve thereby can make.

With reference to Fig. 4, the first electrode 221 of the organic light emitting apparatus EL of TFT to be electrically connected to can be formed on the passivation layer 218, to be electrically connected to TFT.A plurality of the first electrodes 221 can arrange so that island type pattern (island pattern) is independent in sub-pixel unit.The first electrode 221 can be arranged in the luminescence unit 312 of pixel region 31, not with pixel circuit unit 311 overlaids.

The pixel that is formed by organic material and/or inorganic material limits layer 219 and can be formed on the passivation layer 218.Pixel limits layer 219 can comprise the 3rd opening 219a, and for example, therefore the edge of the first electrode 221 limits 219 covering of layer by pixel, and the middle body of the first electrode 221 is exposed.Pixel limits layer 219 can cover pixel region 31, but is not limited to this, and for example, pixel limits at least a portion that layer 219 can cover pixel region 31, for example edge of the first electrode 221.The second opening 219b can be formed on pixel and limit in the corresponding part of layer 219 and transmission area 32, as shown in Figure 4.If pixel limits layer 219 and is not arranged in the transmission area 32, then can improve and pass the efficient that transmission area 32 is propagated extraneous light.

Passivation layer 218 and pixel limit layer 219 and all can be formed by transparent material.In this case, because for example passivation layer 218 and the pixel insulating barrier that limits layer 219 is formed by transparent material, pass the efficient that transparent display device 10 is propagated extraneous lights so can improve.

Organic layer 223 and the second electrode 222 can sequentially be arranged on the first electrode 221 that exposes via the 3rd opening 219a.The second electrode 222 can be arranged in the pixel region 31, to face the first electrode 221 and to cover organic layer 223 and pixel restriction layer 219.The second electrode 222 can be formed in the pixel region 31 at least, and can comprise the first opening 222a in its part corresponding with transmission area 32, as shown in Figure 4.If the second electrode 222 is not arranged in the transmission area 32, then can improves and pass the efficient that transmission area 32 is propagated extraneous light.The first opening 222a and the second opening 219b can be connected to each other.

Organic layer 223 can be low-molecular-weight organic layer or polymer organic layer.If organic layer 223 is low-molecular-weight organic layers, then organic layer 223 can be by forming with single structure or the stacking hole injection layer of composite construction (HIL), hole transmission layer (HTL), luminescent layer (EML), electron transfer layer (ETL) and electron injecting layer (EIL).In this case, organic layer 223 can be formed by any of various organic materials, for example CuPc (CuPc), N, N '-two (naphthalene-1-yl)-N, N '-diphenyl-benzidine (NPB) or three-oxine aluminium (Alq3).The low-molecular-weight organic layer for example can form by vacuum moulding machine.In this case, HIL, HTL, ETL and EIL can be the common layer of redness, green and blue pixel.

The first electrode 221 can be used as anode, and the second electrode 222 can be used as negative electrode, otherwise perhaps.According to an execution mode, the first electrode 221 can be transparency electrode, and the second electrode 222 can be reflecting electrode.For example, the first electrode 221 can be formed by transparent, conductive material, for example ITO, IZO, ZnO, In ₂O ₃Deng, the second electrode 222 can be formed by such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca etc.Therefore, organic light emitting apparatus EL can be bottom-emission type equipment, wherein shows image towards the first electrode 221.In this case, the second electrode 222 can form suitable thickness, is not enough to cause the voltage drop that occurs in whole display unit.Therefore, can make large-sized display unit 100.

Fig. 5 is the schematic cross sectional views according to the display unit 100 ' of another execution mode.Display unit 100 shown in Figure 5 ' can be such luminous display unit, wherein transparent display device 10 is top emission type display devices, it is different from the display unit 100 of Fig. 1.Display unit 100 ' can comprise the first delayer 41, the first polarizer 21, transfer lag device 61 and the second polarizer 22, the first delayer 41 and the first polarizer 21 sequentially are arranged on the second substrate 2 of transparent display device 10, and transfer lag device 61 and the second polarizer 22 sequentially are arranged on the first substrate 1 of transparent display device 10.Opposite with the display unit 100 of Fig. 1, as to show on the outside of the second substrate 2 of display unit 100 ' be included in transparent display device 10 image.Display unit 100 ' other parts with regard to its function, other parts with the display unit 100 of Fig. 1 are identical basically, therefore will repeat no more.

Fig. 6 shows according to included pixel in the transparent display device 10 of another execution mode Fig. 5.Fig. 7 shows according to included pixel in the transparent display device 10 of another execution mode Fig. 5.

With reference to Fig. 6 and 7, pixel comprises pixel circuit unit 311 and the luminescence unit 312 of mutual overlapping setting, and this is different from the pixel shown in Fig. 2 and 3.Because in luminescence unit 312, produce top light emitting towards the second substrate 2, so pixel circuit unit 311 and luminescence unit 312 can be mutually overlapping.In addition, because comprise that the pixel circuit unit 311 of image element circuit (not shown) is covered by luminescence unit 312, therefore can prevent by the caused optical interference of image element circuit.Display unit 100 ' other parts with regard to its function, other parts with the display unit 100 of Fig. 2 or 3 are identical basically, therefore will repeat no more.Should be noted that transmission area 32 can be set to correspond respectively to a plurality of sub-pixel Pr, Pg and Pb, thereby be spaced from each other as shown in Figure 6, perhaps can interconnect as shown in Figure 7.

Fig. 8 is the cutaway view of the redness shown in Fig. 6 or 7, green and one of blue subpixels Pr, Pg and Pb.With reference to Fig. 8, TFT can be arranged in the pixel circuit unit 311, as the organic light emitting apparatus EL of luminaire can be arranged on luminescence unit 312 ' in.

Particularly, resilient coating 211 can be formed on the first substrate 1, and semiconductor active layer 212 can be formed on the resilient coating 211, and gate insulation layer 213, grid 214 and interlayer insulating film 215 can be formed on the semiconductor active layer 212.Source electrode 216 and drain electrode 217 can be formed on the interlayer insulating film 215.Passivation layer 218 as a kind of insulating barrier can form covering TFT.Passivation layer 218 can cover pixel region 31 and transmission area 32, as shown in Figure 8, but is not limited to this.Passivation layer 218 can be included in the opening (not shown) in its part corresponding with transmission area 32, has therefore improved and has passed the efficient that transmission area 32 is propagated extraneous lights.

With reference to Fig. 8, the first electrode 221 that is electrically connected to the organic light emitting apparatus EL of TFT can be arranged on the passivation layer 218.The first electrode 221 can be arranged in the luminescence unit included in the pixel region 31 312, and the first electrode 221 can be overlapping with pixel circuit unit 311, and to cover pixel circuit unit 311, for example the first electrode 221 can be arranged in the pixel region 31.

The pixel that is formed by organic material and/or inorganic material limits layer 219 and can be arranged on the passivation layer 218.Pixel limits layer 219 can comprise the 3rd opening 219a in the following manner therein: the edge of the first electrode 221 can limit 219 covering of layer by pixel, and the middle body of the first electrode 221 is exposed.Pixel limits layer 219 can cover pixel region 31, but is not limited to this, and for example pixel limits at least a portion (for example edge of the first electrode 221) that layer 219 can cover pixel region 31.The second opening 219b can be formed on pixel and limit in the corresponding part of layer 219 and transmission area 32, as shown in Figure 8.If pixel limits layer 219 and is not arranged in the transmission area 32, then can improve and pass the efficient that transmission area 32 is propagated extraneous light.

Passivation layer 218 and pixel limit layer 219 and can be formed by transparent material.In this case, because for example passivation layer 218 and the pixel insulating barrier that limits layer 219 is formed by transparent material, pass the efficient that transparent display device 10 is propagated extraneous lights so can improve.

Organic layer 223 and the second electrode 222 can sequentially be arranged on the first electrode 221 that exposes via the 3rd opening 219a.The second electrode 222 can be formed in the pixel region 31 at least, and the second electrode 222 first opening 222a that can comprise in its part corresponding with transmission area 32, as shown in Figure 8.If the second electrode 222 is not arranged in the transmission area 32, then can improves and pass the efficient that transmission area 32 is propagated extraneous light.The first opening 222a and the second opening 219b can be connected to each other.

In the execution mode of Fig. 8, the first electrode 221 can have the stacked structure in transparent conductor and reflector, and the second electrode 222 can be the electrode of translucent and half reflection.This transparent conductor can the oxide of high work function forms by having relatively, for example ITO, IZO, ZnO or In ₂O ₃This reflector for example can be formed by Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo and at least a of its alloy kind.

The second electrode 222 for example can be by at least a formation the in Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo and its alloy.The second electrode 222 can be by thickness approximately

Arrive approximately

Between film form, thereby can improve its transmissivity.Like this, organic light emitting apparatus EL is top emission type equipment, wherein shows image towards the second electrode 222.

Fig. 9 to 12 show according to illustrative embodiments according to the display unit 100 and 100 of preassigned pattern ' driving.For example, display unit 100 and 100 ' in each all can comprise: according to the phase-delay value of transfer lag device 61 and two kinds of patterns of classifying according to the light intensity of propagating by display unit.Hereinafter, only for convenience's sake, suppose that transfer lag device 61 is by Formation of liquid crystals.The phase-delay value of transfer lag device 61 can be by being applied to transfer lag device 61 power or the level of voltage determine.Will describe now, in two kinds of patterns of classifying according to the phase-delay value of transfer lag device 61, incide the transmissivity of the extraneous light on the display unit.The execution mode of Fig. 9 to 12 can be divided into the execution mode of Fig. 9 and 10 and the execution mode of Figure 11 and 12, Fig. 9 and 10 execution mode are the execution mode that comprises the polarizer with identical polarization axle and different transmissivity pattern, and Figure 11 and 12 execution mode are the execution mode that comprises the polarizer with different polarization axles and different transmissivity pattern.

Fig. 9 and 12 shows black pattern, and Figure 10 and 11 shows transparent mode.With reference to Fig. 9 to 12, use Jones matrix to calculate the optical transmission characteristic that (Jones Matrix calculation) determines to pass through each optics.And, with reference to Fig. 9 to 12, the second extraneous light 52(that will be described in successively propagates on the direction opposite with the image display direction namely before light) and the first extraneous light 51 (namely backlight) of propagating in the direction that shows image.

Particularly, Fig. 9 and 10 shows the first polarizer 21 and has the situation of identical polarization axle with the second polarizer 22.Fig. 9 shows black pattern, and it does not allow front light and backlight any one to propagate by display unit, and Figure 10 shows transparent mode, before it allows light and backlight in each approximately 50% propagate by display unit.

With reference to Fig. 9, the first power is offered transfer lag device 61a, liquid crystal is arranged among the transfer lag device 61a, so that incident light is postponed+1/4 wavelength (+λ/4).The first delayer 41 also postpones+1/4 wavelength (+λ/4) with incident light.Therefore, the first delayer 41 and transfer lag device 61a on identical direction with incident light phase delay to identical degree.In addition, with reference to Fig. 9, the first polarizer 21 has identical polarization axle with the second polarizer 22a.If the use matrix notation, the first delayer 41 and transfer lag device 61a can be expressed as so

The first polarizer 21 and the second polarizer 22a can be expressed as

The various combinations whether extraneous light passes above-mentioned optics will be described now.

The light of image 50 sends with the direction that arrow D1 represents from the transparent display device 10 of Fig. 9, so that the user can see image.

The matrix value of the second extraneous light 52 can be expressed as (Ex=1, Ey=0).Be converted to the second extraneous light 52a of linear polarization by the second extraneous light 52 of the first polarizer 21.The second extraneous light 52a by the first delayer 41 is converted to the second extraneous light 52b, and the phase place of the second extraneous light 52b has been delayed+1/4 wavelength (+λ/4).The second extraneous light 52b by transfer lag device 61a is converted to the second extraneous light 52c, and the phase place of the second extraneous light 52c has been delayed+1/4 wavelength (+λ/4).Be converted to the second extraneous light 52d of linear polarization by the second extraneous light 52c of the second polarizer 22a.The matrix value of the second extraneous light 52d that finally obtains is (E`x=0, E`y=0).In other words, the direction that do not represent with arrow D2 of the second extraneous light 52 propagates through the display device of Fig. 9.This can represent by following formula 1.

$\left(\begin{array}{c}0\\ 0\end{array}\right)=\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -\mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right)\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 1

The matrix value of the first extraneous light 51 can be expressed as (Ex=1, Ey=0).Be converted to the first extraneous light 51a of linear polarization by the first extraneous light 51 of the second polarizer 22a.The first extraneous light 51a by transfer lag device 61a is converted to the first extraneous light 51b, the phase delay of the first extraneous light 51b+1/4 wavelength (+λ/4).The first extraneous light 51b by the first delayer 41 is converted to the first extraneous light 51c, the phase delay of the first extraneous light 51c+1/4 wavelength (+λ/4).Be converted to the first extraneous light 51d of linear polarization by the first extraneous light 51c of the first polarizer 21.The matrix value of the first extraneous light 51d that finally obtains is (E`x=0, E`y=0).In other words, the first extraneous light 51 does not propagate through the display device of Fig. 9 with the direction shown in the arrow D1.This can represent by following formula 2.

$\left(\begin{array}{c}0\\ 0\end{array}\right)=\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -\mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right)\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 2

So, with reference to Fig. 9, if the first polarizer 21 has identical polarization axle with the second polarizer 22a, and transfer lag device 61a is controlled as has the phase-delay value identical with the first delayer 41, and each transmissivity by display device in the first extraneous light 51 and the second extraneous light 52 is zero so.In other words, the black pattern of display unit can easily realize by the phase-delay value that changes transfer lag device 61.

Figure 10 shows transparent mode, before it allows light and backlight in each approximately 50% propagate through display unit.With reference to Figure 10, the second power is offered transfer lag device 61b, liquid crystal is arranged among the transfer lag device 61b, will incide light delay (1/4) wavelength (λ/4) on it.The first delayer 41 postpones+1/4 wavelength (+λ/4) with incident light.Therefore, the first delayer 41 and transfer lag device 61b carry out phase delay to incident light respectively step by step, and every grade absolute value is identical, but postpone in different directions.In addition, with reference to Figure 10, the first polarizer 21 has identical polarization axle with the second polarizer 22a.So when using matrix notation, the first delayer 41 can be expressed as $\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right),$ Transfer lag device 61b can be expressed as $\left(\begin{array}{cc}1& 0\\ 0& i\end{array}\right),$ And first polarizer 21 and the second polarizer 22a can be expressed as $\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right).$

The light of image 50 sends from transparent display device 10 on the direction that arrow D1 represents, so that the user can see image.

The matrix value of the second extraneous light 52 can be expressed as (Ex=1, Ey=0).Be converted to the second extraneous light 52a of linear polarization by the second extraneous light 52 of the first polarizer 21.The second extraneous light 52a by the first delayer 41 is converted to the second extraneous light 52b, and the phase place of the second extraneous light 52b has been delayed+1/4 wavelength (+λ/4).The second extraneous light 52b by transfer lag device 61b is converted to the second extraneous light 52c, and the phase place of the second extraneous light 52c has been delayed (1/4) wavelength (λ/4).Be converted to the second extraneous light 52d of linear polarization by the second extraneous light 52c of the second polarizer 22a.The matrix value of the second extraneous light 52d that finally obtains is (E`x=0.5, E`y=0.5).In other words, approximately the direction that represents at arrow D2 of the second extraneous light 52 of 50% propagates through the display unit 100 of Figure 10.This can represent by following formula 3.

$\left(\begin{array}{c}.5\\ .5\end{array}\right)=\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& \mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right)\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 3

The matrix value of the first extraneous light 51 can be expressed as (Ex=1, Ey=0).Be converted to the first extraneous light 51a of linear polarization by the first extraneous light 51 of the second polarizer 22a.The first extraneous light 51a by transfer lag device 61b is converted to the first extraneous light 51b, and the phase place of the first extraneous light 51b has been delayed (1/4) wavelength (λ/4).The first extraneous light 51b by the first delayer 41 is converted to the first extraneous light 51c, and the phase place of the first extraneous light 51c has been delayed+1/4 wavelength (+λ/4).Be converted to the first extraneous light 51d of linear polarization by the first extraneous light 51c of the first polarizer 21, the matrix value of the first final extraneous light 51d is (E`x=0.5, E`y=0.5).In other words, approximately the first extraneous light 51 of 50% propagates through the display unit of Figure 10 in the direction of arrow D1.This can represent by following formula 4.

$\left(\begin{array}{c}.5\\ .5\end{array}\right)=\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -\mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& i\end{array}\right)\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 4

So, with reference to Figure 10, if the first polarizer 21 has identical polarization axle with the second polarizer 22a, and transfer lag device 61b is controlled as has the phase-delay value different from the first delayer 41, for example, absolute value is identical but direction different, and each transmissivity by display device in the first extraneous light 51 and the second extraneous light 52 approximately is 50% so.In other words, the transparent mode of display unit can easily be realized by the phase-delay value that changes transfer lag device 61b.

Figure 11 and 12 shows the polarization axle situation vertical with the polarization axle of the second polarizer 22b of the first polarizer 21.

Figure 11 shows transparent mode, before it allows light and backlight in each approximately 50% propagate through display unit.In the display unit of Figure 11, the first power is offered transfer lag device 61a, thereby liquid crystal is arranged among the transfer lag device 61a, will incide light delay on it+1/4 wavelength (+λ/4).The first delayer 41 postpones+1/4 wavelength (+λ/4) with incident light.Therefore, the first delayer 41 and transfer lag device 61a on identical direction with incident light phase delay to identical degree.In addition, the first polarizer 21 and the second polarizer 22b among Figure 11 have respectively orthogonal polarization axle, and this is different from Fig. 9.If the use matrix notation, the first delayer 41 and transfer lag device 61a can be expressed as so $\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right),$ The first polarizer 21 can be expressed as $\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right),$ The second polarizer 22b can be expressed as $\left(\begin{array}{cc}.5& -.5\\ -.5& .5\end{array}\right).$

The light of image 50 sends with the direction that arrow D1 represents from the transparent display device 10 of Figure 11, so that the user can see image.

The matrix value of the second extraneous light 52 can be expressed as (Ex=1, Ey=0).Be converted to the second extraneous light 52a of linear polarization by the second extraneous light 52 of the first polarizer 21.The second extraneous light 52a by the first delayer 41 is converted to the second extraneous light 52b, and the phase place of the second extraneous light 52b has been delayed+1/4 wavelength (+λ/4).The second extraneous light 52b by transfer lag device 61a is converted to the second extraneous light 52c, and the phase place of the second extraneous light 52c has been delayed+1/4 wavelength (+λ/4).Be converted to the second extraneous light 52d of linear polarization by the second extraneous light 52c of the second polarizer 22b.The matrix value of the second extraneous light 52d that finally obtains can be expressed as (E`x=0.5, E`y=0.5).In other words, approximately the direction that represents at arrow D2 of the second extraneous light 52 of 50% propagates through the display unit of Figure 11.This can represent by following formula 5.

$\left(\begin{array}{c}.5\\ .5\end{array}\right)=\left(\begin{array}{cc}.5& -.5\\ -.5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -\mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right)\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 5

The matrix value of the first extraneous light 51 can be expressed as (Ex=1, Ey=0).Be converted to the first extraneous light 51a of linear polarization by the first extraneous light 51 of the second polarizer 22b.The first extraneous light 51a by transfer lag device 61a is converted to the first extraneous light 51b, and the phase place of the first extraneous light 51b has been delayed+1/4 wavelength (+λ/4).The first extraneous light 51b by the first delayer 41 is converted to the first extraneous light 51c, and the phase place of the first extraneous light 51c has been delayed+1/4 wavelength (+λ/4).Be converted to the first extraneous light 51d of linear polarization by the first extraneous light 51c of the first polarizer 21.The matrix value of the first extraneous light 51d that finally obtains can be expressed as (E`x=0.5, E`y=0.5).In other words, approximately the first extraneous light 51 of 50% propagates through the display unit of Figure 11 in the direction of arrow D1.This can represent by following formula 6.

$\left(\begin{array}{c}.5\\ .5\end{array}\right)=\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -\mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right)\left(\begin{array}{cc}.5& -.5\\ -.5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 6

So, with reference to Figure 11, if the first polarizer 21 has different polarization axles with the second polarizer 22b, and transfer lag device 61a is controlled as has the phase-delay value identical with the first delayer 41, and the transmissivity of each in the first extraneous light 51 and the second extraneous light 52 by display device is approximately 50% so.In other words, the transparent mode of display unit can easily be realized by the phase-delay value that changes transfer lag device 61.According to present embodiment, the transmissivity of the display unit of transparent mode is higher, and for example approximately 50%.

Figure 12 shows black pattern, and it does not allow front light or backlight any to propagate through display unit.In the display unit of Figure 12, the second power is offered transfer lag device 61b, thereby liquid crystal is arranged among the transfer lag device 61a, so that incident light is postponed (1/4) wavelength (λ/4).The first delayer 41 postpones+1/4 wavelength (+λ/4) with incident light, and the first delayer 41 of this and aforesaid Fig. 1 is similar.Therefore, the first delayer 41 and transfer lag device 61b carry out phase delay to incident light respectively step by step, postpone in different directions but every grade absolute value is identical.In addition, with reference to Figure 12, the first polarizer 21 and the second polarizer 22a have respectively mutually perpendicular polarization axle.If when using matrix notation, the first delayer 41 can be expressed as $\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right),$ Transfer lag device 61b can be expressed as $\left(\begin{array}{cc}1& 0\\ 0& i\end{array}\right),$ The first polarizer 21 can be expressed as $\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right),$ The second polarizer 22a can be expressed as $\left(\begin{array}{cc}.5& -.5\\ -.5& .5\end{array}\right).$

The light of image 50 sends from transparent display device 10 with the direction of arrow D1, so that the user can see image.

The matrix value of the second extraneous light 52 can be expressed as (Ex=1, Ey=0).Be converted to the second extraneous light 52a of linear polarization by the second extraneous light 52 of the first polarizer 21.The second extraneous light 52a by the first delayer 41 is converted to the second extraneous light 52b, and the phase place of the second extraneous light 52b has been delayed+1/4 wavelength (+λ/4).The second extraneous light 52b by transfer lag device 61b is converted to the second extraneous light 52c, and the phase place of the second extraneous light 52c has been delayed (1/4) wavelength (λ/4).Be converted to the second extraneous light 52d of linear polarization by the second extraneous light 52c of the second polarizer 22b.The matrix value of the second extraneous light 52d that finally obtains is (E`x=0, E`y=0).In other words, the direction that do not represent with arrow D2 of the second extraneous light 52 propagates through the display unit 100 of Figure 12.This can represent by following formula 7.

$\left(\begin{array}{c}0\\ 0\end{array}\right)=\left(\begin{array}{cc}.5& -.5\\ -.5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& \mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -i\end{array}\right)\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 7

The matrix value of the first extraneous light 51 can be expressed as (Ex=1, Ey=0).Be converted to the first extraneous light 51a of linear polarization by the first extraneous light 51 of the second polarizer 22b.The first extraneous light 51a by transfer lag device 61b is converted to the first extraneous light 51b, and the phase place of the first extraneous light 51b has been delayed (1/4) wavelength (λ/4).The first extraneous light 51b by the first delayer 41 is converted to the first extraneous light 51c, and the phase place of the first extraneous light 51c has been delayed+1/4 wavelength (+λ/4).Be converted to the first extraneous light 51d of linear polarization by the first extraneous light 51c of the first polarizer 21, the matrix value of the first final extraneous light 51d is (E`x=0, E`y=0).In other words, the first extraneous light 51 does not propagate through the display unit of Figure 12 with the direction of arrow D1.This can represent by following formula 8.

$\left(\begin{array}{c}0\\ 0\end{array}\right)=\left(\begin{array}{cc}.5& .5\\ .5& .5\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& -\mathrm{<figure-callout\; id="1"\; label="i"\; filenames="HDA00001685139900061.png"\; state="\{\{state\}\}">i</figure-callout>}\end{array}\right)\left(\begin{array}{cc}1& 0\\ 0& i\end{array}\right)\left(\begin{array}{cc}.5& -.5\\ -.5& .5\end{array}\right)\left(\begin{array}{c}1\\ 0\end{array}\right)$ Formula 8

So, with reference to Figure 12, if the first polarizer 21 has identical polarization axle with the second polarizer 22b, and transfer lag device 61b is controlled as has the phase-delay value different from the first delayer 41, and each transmissivity by display device in the first extraneous light 51 and the second extraneous light 52 is zero so.In other words, the black pattern of display unit can easily realize by the phase-delay value that changes transfer lag device 61.

According to illustrative embodiments, the transmissivity of the extraneous light by display unit can be controlled such as the optics of polarizer and delayer by utilizing, this can operate in the situation of not using the less power of power or use, and do not reduce the transmissivity of extraneous light, greatly reduce the high power consuming device (for example shutter) of the transmissivity of extraneous light with replacement.That is to say, can change with the combination of optics the phase place of light and the direction that light is polarized.

Figure 13 is the display unit 100 according to another execution mode " schematic cross sectional views.With reference to Figure 13, similar with the display unit 100 of Fig. 1, the first polarizer 21, the first delayer 41, transparent display device 10, transducer 65 and the second polarizer 22 can be arranged on display unit 100 " in.Transducer 65 is convertible delayers corresponding with the transfer lag device 61 of Fig. 1 or Fig. 5.Transducer 65 can comprise the second delayer 62 and liquid crystal layer 64.The second delayer 62 can be arranged between transparent display device 10 and the liquid crystal layer 64, and liquid crystal layer 64 can be arranged between the second delayer 62 and the second polarizer 22.The liquid crystal layer of the liquid crystal layer 64 that for example usually uses in LCD monitor is cheap and holds facile.Liquid crystal layer 64 can be with incident light postpone 0 degree or+1/2 wavelength (+λ/2) or postpone (1/2) wavelength (λ/2) or the convertible delayer of 0 degree.The second delayer 62 can postpone incident light+1/4 wavelength (+λ/4) or (1/4) wavelength (λ/4).Therefore other parts shown in Figure 13 and Fig. 1 or shown in Figure 5 corresponding repeat no more here.

Transducer 65 can be convertible delayer, it carries out phase delay to incident light by (1/4) wavelength (λ/4) that is combined in that uses liquid crystal layer 64 and the second delayer 62 in the scope of+1/4 wavelength (+λ/4), this transfer lag device 61 with Fig. 1 or Fig. 5 is identical.

For example, will describe the second delayer 62 be with incident light postpone the convertible delayer of (1/4) wavelength (λ/4) and liquid crystal layer 64 with incident light postpone 0 degree or+situation of 1/2 wavelength (+λ/2).In this case, the phase-delay value as the transducer 65 of the second delayer 62 and liquid crystal layer 64 combinations can be (λ/4)+(0)=(λ/4) or (λ/4)+(+λ/2)=(+λ/4).That is to say, the phase-delay value of transducer 65 can equal the phase-delay value of the transfer lag device 61 of Fig. 1 or Fig. 5.In other words, can substitute transfer lag device 61 and use transducer 65.

As another embodiment, will describe the second delayer 62 and be convertible delayer and liquid crystal layer 64 that incident light is postponed+1/4 wavelength (+λ/4) and incident light be postponed the situation of (1/2) wavelength (λ/2) or 0 degree.In this case, the phase-delay value as the transducer 65 of the second delayer 62 and liquid crystal layer 64 combinations can be (+λ/4)+(λ/2)=(λ/4) or (+λ/4)+(0)=(+λ/4).In other words, the phase-delay value of transducer 65 equals the phase-delay value of the transfer lag device 61 of Fig. 1 or Fig. 5.Therefore, can substitute transfer lag device 61 and use transducer 65.

According to illustrative embodiments, the incompatible manufacturing of simple knot that can be by using optics is controlled the display unit 100 of transmissivity by its exterior light according to pattern ", optics for example is delayer and liquid crystal layer, and replaces transfer lag device 61.Display unit 100 at Figure 13 " in; when the first polarizer 21 has identical polarization axle with the second polarizer 22; can be according to the voltage that is applied to liquid crystal layer 64 and by using the combination of the first polarizer 21 and the second polarizer 22, to realize transparent mode and black pattern with reference accompanying drawing 9 and the similar mode of 10 described modes.

Although do not have shown in Figure 13ly, when transparent display device 10 when being top emission type display devices identical with Fig. 5 or when transparent display device 10 is the bottom-emission display device, can implement the execution mode among Fig. 9-12 yet.

In the claim that the application proposes, the first phase place can be (+λ/4), the second phase place can be (λ/4) or (+λ 3/4), the third phase position can be 0 degree, the 4th phase place can be (+λ/2), the 5th phase place can be (λ/2), and the 6th phase place can be 0 degree.In addition, the first phase place can be 90 degree, and the second phase place can be (90) degree or 270 degree, and third phase position and the 6th phase place can be 0 degree or 360 degree, and the 4th phase place and the 5th phase place can be 180 degree.But illustrative embodiments is not limited to this.

According to above-mentioned execution mode, optical element can be arranged in the transparent display device, and can be with smaller power according to the transmissivity of pattern control by the extraneous light of transparent display device.

Illustrative embodiments is disclosed herein, although and used specific term, they should be understood to general sense and only are task of explanation, and are not used in the restriction purpose.In some instances, the application it is evident that those skilled in the art before submitting day to, unless offer some clarification on, the feature, characteristic and the parts that use in an embodiment can use separately, also can be combined with feature, characteristic and the parts of other execution mode.Correspondingly, it will be understood by those of skill in the art that and in the situation of the spirit and scope that do not break away from illustrative embodiments of the present invention, can make the variation on various forms and the details.

Claims (20)

1. be used for the display unit of control light transmission, described display unit comprises:

Transparent display device, described transparent display device comprise the pixel of the second area that is divided into first area and contiguous described first area, and described first area is used for luminous, and described second area is used for passing it and propagates extraneous light;

The first polarizer is positioned on the first surface of described transparent display device, the light after described the first polarizer is configured to make the extraneous light linear polarization and passes it propagate linear polarization;

The first delayer, between the described first surface of described the first polarizer and described transparent display device, the light after described the first delayer is configured to postpone the phase place of extraneous light and passes its propagation phase delay;

The second polarizer, be positioned on the second surface of described transparent display device, described first surface and the described second surface of described transparent display device are respect to one another, the light after described the second polarizer is configured to make the extraneous light linear polarization and passes it propagate linear polarization; And

The transfer lag device, between the described second surface of described the second polarizer and described transparent display device, described transfer lag device is configured to when providing power to described transfer lag device, the light after postponing the phase place of extraneous light and pass its propagation phase delay in by the scope of the first phase place to the second phase place.

2. display unit as claimed in claim 1, wherein, described the first polarizer has identical polarization axle with described the second polarizer.

3. display unit as claimed in claim 2, wherein said the first delayer is configured to described the first phase place of the phase delay of extraneous light.

4. display unit as claimed in claim 3, wherein, described transfer lag device be configured to according to for its power that provides with described the first phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is passed its transmission for stopping extraneous light.

5. display unit as claimed in claim 3, wherein, described transfer lag device be configured to according to for its power that provides with described the second phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is propagated extraneous light for passing it.

6. display unit as claimed in claim 1, wherein, described the first polarizer and described the second polarizer have mutually perpendicular polarization axle.

7. display unit as claimed in claim 6, wherein said the first delayer is configured to described the first phase place of the phase delay of extraneous light.

8. display unit as claimed in claim 7, wherein, described transfer lag device be configured to according to for its power that provides with described the first phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is propagated extraneous light for passing it.

9. display unit as claimed in claim 7, wherein, described transfer lag device be configured to according to for its power that provides with described the second phase place of the phase delay of extraneous light, described the first phase place has identical absolute value with described the second phase place but has different directions, and described display device configurations is passed its transmission for stopping extraneous light.

10. display unit as claimed in claim 1, wherein, described transfer lag device comprises the second delayer and liquid crystal layer, described the second delayer is between described transparent display device and described liquid crystal layer, described liquid crystal layer is between described the second delayer and described the second polarizer, and described liquid crystal layer is configured to postpone in predetermined scope according to the voltage that applies to it phase place of extraneous light.

11. display unit as claimed in claim 10, wherein, described the first polarizer has identical polarization axle with described the second polarizer, and described the first delayer is configured to described the first phase place of the phase delay of extraneous light.

12. display unit as claimed in claim 11, wherein:

Described the second delayer is configured to described the second phase place of the phase delay of extraneous light,

Described liquid crystal layer is configured to when voltage is applied to described liquid crystal layer, postpones the phase place of extraneous light in by the scope of third phase position to the four phase places, and

The summation of described third phase position and described the 4th phase place equals described the 4th phase place, and the summation of described the 4th phase place and described the second phase place equals described the first phase place, and described the first phase place has identical absolute value with described the second phase place but has different directions.

13. display unit as claimed in claim 11, wherein:

Described the second delayer is configured to described the first phase place of the phase delay of extraneous light,

Described liquid crystal layer is configured to when voltage is applied to described liquid crystal layer, postpones the phase place of extraneous light in by the scope of the 5th phase place to the six phase places, and

The summation of described the 5th phase place and described the first phase place equals described the second phase place, and the summation of described the 6th phase place and described the first phase place equals described the first phase place, and described the first phase place has identical absolute value with described the second phase place but has different directions.

14. display unit as claimed in claim 10, wherein, described the first polarizer and described the second polarizer have mutually perpendicular polarization axle, and described the first delayer is configured to described the first phase place of the phase delay of extraneous light.

15. display unit as claimed in claim 14, wherein:

Described the second delayer is configured to described the second phase place of the phase delay of extraneous light,

Described liquid crystal layer is configured to when voltage is applied to described liquid crystal layer, postpones the phase place of extraneous light in by the scope of third phase position to the four phase places, and

The summation of described third phase position and described the 4th phase place equals described the 4th phase place, and the summation of described the 4th phase place and described the second phase place equals described the first phase place, and described the first phase place has identical absolute value with described the second phase place but has different directions.

16. display unit as claimed in claim 14, wherein:

Described the second delayer is configured to described the first phase place of the phase delay of extraneous light,

Described liquid crystal layer is configured to when voltage is applied to described liquid crystal layer, postpones the phase place of extraneous light in by the scope of the 5th phase place to the six phase places, and

The summation of described the 5th phase place and described the first phase place equals described the second phase place, and the summation of described the 6th phase place and described the first phase place equals described the first phase place, and described the first phase place has identical absolute value with described the second phase place but has different directions.

17. display unit as claimed in claim 1; Wherein said pixel comprises:

Pixel circuit unit is arranged in described first area and comprises at least one thin-film transistor;

The first insulating barrier covers described pixel circuit unit at least;

The first electrode is positioned on described the first insulating barrier, and to be electrically connected to described pixel circuit unit, described the first electrode is arranged in described first area;

The second electrode is arranged in the described first area of described pixel and at least towards described the first electrode; And

Organic layer, between described the first electrode and described the second electrode, described organic layer comprises luminescent layer.

18. display unit as claimed in claim 1, wherein, described transfer lag device is the convertible delayer with at least two out of phase states.

19. display unit as claimed in claim 1, wherein, described the first delayer and described transfer lag device comprise different materials.

20. display unit as claimed in claim 19, wherein, described transfer lag device comprises liquid crystal.

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